<!DOCTYPE html>
<style>
    #multicol { width:100px; height:40px; background:black; }
    #float { float:right; width:30px; height:30px; background:blue; }
</style>
<p>There should be a blue box in the top right corner of the black box.</p>
<div id="multicol">
    <div id="float"></div>
</div>
